1210.5818 (Ionut-Cristian Arsene et al.)

J$ψ$ nuclear modification factor at mid-rapidity in Pb-Pb collisions
at $\sqrt{s_{NN}}=$2.76 TeV    [PDF]

Ionut-Cristian Arsene, for the ALICE Collaboration

We report on the J$\psi$ nuclear modification factor $R_{\rm AA}$ at mid-rapidity ($|y|<0.9$) in Pb-Pb collisions at $\sqrt{s_{NN}}=$2.76 TeV measured by ALICE. J$\psi$ candidates are reconstructed using their $e^+e^-$ decay channel. The kinematical coverage extends to zero transverse momentum allowing the measurement of integrated cross sections. We show the centrality dependence of the J$\psi$ $R_{\rm AA}$ at mid-rapidity compared to the results from PHENIX at mid-rapidity and ALICE results at forward-rapidity. We also discuss comparisons to calculations from theoretical models.

View original: http://arxiv.org/abs/1210.5818